Micronair SprayPod

Micronair Rotary Atomiser Spray Pod System for Aerial Application

The Micronair Spray Pod System enables a suitable aircraft to be converted to a spraying role within hours.

Two completely self-contained spray pods are mounted on standard underwing pylons, thus eliminating any need for structural modification of the aircraft.  As the entire spray system is external to the fuselage there is no risk of chemical contamination of the cabin.

The versatile pod system has many applications, ranging from agricultural, locust and mosquito spraying to pollution control.

The Spray Pod System has been installed on many aircraft types, including:

  • Britten-Norman BN-2 series
  • Dornier DO-228 series
  • De Havilland DH-2 Beaver
  • Partenavia P-68
  • Pilatus PC-7 and PC-9

Micronair can provide a detailed proposal and installation kit for any other suitable type.

Each spray pod combines three functions to provide a completely self-contained spraying system:

  • Chemical Tank
  • Rotary Atomiser
  • Monitoring System

Chemical tank

The body of the pod forms the chemical tank.  This is manufactured from glass reinforced plastic (GRP) composite material for light weight, durability and chemical resistance.  The aerodynamic profile ensures minimum drag.  Pods are provided with internal baffles and a cross-over vent to ensure stability and freedom from spillage at all flight attitudes.

Rotary atomiser

Each pod is fitted with a Micronair AU4000 atomiser.  This uses a rotating wire gauze cage to break the chemical into evenly sized spray droplets.

This unique approach ensures that all the spray volume is concentrated into a narrow range of droplet sizes.  The size of the spray droplets can be adjusted by varying the rotational speed of the atomiser, thus producing the optimum size droplet for the chemical and application technique being used.

Monitoring system

The Pod Spray System is controlled and monitored from a panel which is installed in the cockpit of the aircraft.

The control panel is connected to the pods by a wiring loom.  The loom and its connectors are permanently installed in the aircraft.  There are no mechanical or fluid connections between the pods and the fuselage.

Eight functions

The Application Monitor draws on Micronair’s world-wide experience of agricultural operations.  The robust unit provides a comprehensive range of eight functions:

  1. Application Rate: The number of litres or gallons being applied on each hectare or acre.
  2. Flow Rate: Chemical flow rate from each pod in litres or gallons per minute.
  3. Total Volume A: The total number of litres or gallons of chemical sprayed from each pod.  The total can be re-set at any time.
  4. Total Volume B: The total volume sprayed from each pod.  This cannot be re-set whilst spraying and can be used to check job totals.
  5. Area in Hectares or Acres: This is the total area covered whilst spraying.
  6. Work Rate: The coverage of the aircraft in hectares or acres per minute.
  7. Spray Time: The total time for which the pods have been spraying during a job.
  8. Atomiser RPM: The rotational speed of the atomiser on each pod.

Other Spray Systems

Micronair has the experience and facilities to design, manufacture and assist with the airworthiness certification of a wide range of specialised spray systems.

These systems range from simple atomiser installations to complete spray systems comprising chemical tanks, spray booms, structural modification and instrumentation.

Systems developed to date include:

  • Piper PA25 Aztec – Public Health and pollution control spraying.
  • Beech Baron C55 – Tsetse fly control.
  • CASA 212 – pollution control.
  • BN-2 Series Islander – several variants for locust control, public health and agricultural spraying.
  • Douglas DC3 – public health and forestry spraying.
  • De Havilland DHC – 4A Caribou – waterbomber system for forest fire control.
  • Aerospatiale Super Puma helicopter – locust control.
  • Aero Commander 690 – Tsetse fly control.

Micronair’s wide experience in the design and development of these systems enables the Company to offer a practical and cost effective solution to almost any specialised spraying requirement, whether it is an adaption of an existing system or a new project to meet an exacting specification.


SprayPod Brochure (English) (PDF 463 Kb)

Micronair Pod System upgrades (PDF 477 Kb)

Micronair Aerial Product Range Brochure (English) (PDF 1419 Kb)

Public Health Catalogue Micron-IK (English) (PDF 3578 Kb)

Public Health Catalogue Micron-IK (Español) (PDF 2300 Kb)

Public Health Catalogue Micron-IK (Français) (PDF 2301 Kb)

Public Health Catalogue Micron-IK (Português) (PDF 2894 Kb)

Public Health Catalogue Micron-IK (русский) (PDF 3190 Kb)

Public Health Catalogue Micron-IK (Arabic) (PDF 7072 Kb)


Pod Tanking System

 Dimensions:Overall length 103 in. (2.6m) 
Diameter 18 in. (0.5m)
Mounting:  Suitable for attachment to hard carriers with NATO standard 14 inch mounted centres  
Construction:  Chemical resistant glass reinforced plastic/GRP  
Capacity:  50 US Gallons (190 litres) 
Weight: Empty 128 lb (59 kg)
Full 545 lb (248 kg)
Output: Variable from 0-8 US Gall. per minute (0.30 L/min)  
Pump:  24 V DC electric centrifugal 
Operating Airspeed: 75 – 150 MPH (120 – 240 km/hr)  
Flow Measurement: Micronair stainless flowmeter turbine with tungsten carbide bearings.  

AU4000 Atomiser

Installation:  On tripod structure below rear of pod 
Flow Control:  By Micronair Variable Restrictor Unit 
Chemical Shut-off:  Diaphragm check valve and shut-off in atomiser 
Spray Droplet Size: Variable between 40 – 400 microns VMD 
Rotational Speed: Variable between 2000 – 10,000 (max) RPM 
Brake: Electromagnetic brake 

Control Panel

Dimensions: To suit aircraft type
Input Voltage: 24 to 28 volt DC 
Application Monitor:    
Display: Back-lit liquid crystal display 
Flowmeter Accuracy: +/-  2%  
Units of Measure: Metric, US or British  

Note: This specification is provided for reference purposes only.  Micronair Limited reserve the right to alter the specification without prior notice.